Vulnerability identifier: #VU26354

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10931

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
memcached
Server applications / Web servers

Vendor: Memcached

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when parsing a binary protocol header within the try_read_command_binary() function in memcached.c. A remote attacker can pass specially crafted request to the memcached server and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

memcached: 1.6.0 - 1.6.1

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External links
http://github.com/memcached/memcached/commit/02c6a2b62ddcb6fa4569a591d3461a156a636305
http://github.com/memcached/memcached/issues/629
http://github.com/memcached/memcached/wiki/ReleaseNotes162

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.